The relationship between cup design and the radiological signs of aseptic loosening in total hip arthroplasty.

Details

The relationship between cup design and the radiological signs of aseptic loosening in total hip arthroplasty.

Journal

Journal of Bone and Joint Surgery. British Volume

Author(s)

MüllerU., GautierE., RoederC., BusatoA.

ISSN

0301-620X (Print)

ISSN-L

0301-620X

Publication state

Published

Issued date

2003

Volume

85

Number

1

Pages

31-36

Language

english

Notes

Publication types: Journal ArticlePublication Status: ppublish

Abstract

We assessed differences in the incidence and appearance of the radiological signs of loosening of the cup for various types of design. This was an observational study based on hip registry data of 15,340 patients with 17,951 total hip arthroplasties collected over a period of 33 years in 49 hospitals in Central Europe. The threaded and the press-fit titanium cups showed significantly less aseptic loosening than the other systems. The direction of migration and the frequency of the radiological signs of loosening differed between the cup systems and were time-dependent. Our findings indicate the superiority of uncemented threaded cups and press-fit titanium cups over other designs of cup.